Julias



(No Model.)

J. E. CAREY. I STEP BY STEP MECHANISM FOR ELECTRIC CLOCKS. No. 339,264; Patented Apr. 6, 1886.

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UNITED STATES JULIAN E. CAREY, OF NEXV YORK, N. Y., ASSIGNOR TO THE ELF.

PATENT OFFICE.

)TRIC TIME COMPANY.

STEP-BY-STEP MECHANISM FOR ELECTRiC CLCCKS.

SPECIFICATION forming part of Letters Patent No. 339,264, dated April 6, 1886.

Application filed December 18, 1884. Serial No. 150, 16.

(No model.)

To to whom it may concern:

Be it known that I, JULIAN E. CAREY, a citizen of the United States, and a resident of New York, in the county of New York and State of Xew York, have invented certain new and useful Improvements in Combined Electro-Magnet and Stepby-Step Mechanism Operated Thereby, of which the following is a specification.

My invention relates to the construction of an electro-magnet and step-by-step mechanism operated by such magnet, and is designed to furnish a cheap, compact, and effective construction suitable for use in electric clocks, or in any other mechanism wherein it is desirable to effect the rotations of a wheel or train of wheels by the agency of an electro-magnet energizedby regularly or irregularly recurring electric impulses.

My invention consists in the novel features and combinations hereinafter more particularly described, and specified in the claims.

In the accompanying drawings, Figure 1 is a rear end view of a magnet and mechanism constructed according to my invention. Fig. 2 is an edge view of the same. Fig. 3 is a front end view, the face-plate covering the wheel-work being removed. Fig. at is a longitudinal section of the magnet-core, showing the spindle and wheel supported thereby.

B, Fig. 4, indicates the core of the electromagnet, which core is hollow, and is provided with the flanges or heads I) I), of iron, in one piece with the core or attached thereto.

5 These flanges form the attracting poles for the armature,which is indicated at C, and is pivoted on suitable supports, (indicated at 0,) which are attached to the heads b, and are arranged in a line parallel with the axis of the core. The armature G is curved to the outline of the attracting flange or head, and extends from the pivots 0 around to a point nearly diametrically opposite the pivots. The armature is thus subjected to a strong pull, being in close proximity to the flanges. As thus arranged it swings in a plane coinciding with the plane of winding of the coils wound in the space between the flanges and transverse to the axis of the magnet.

D indicates a toothed wheel operated by a pawl, f, carried at the free end of. the armature. The wheel D is mounted parallel with the face of the spool-head, so as to rotate in a plane transverse to the magnetic axis of the spool, and is mounted on an axis or spindle supported in any suitable manner on the spool. I prefer to mount its spindle in the manner indicated in Fig. i, as this gives facility for operating a train of wheels at the opposite end of the spool.

. 'ndlc,which, as shown,

E indicates such spi passes through the hollow core, so as to coin cide with the magnets axis. it is mounted in plugs or bushings c 6, fixed at the ends of the bore or opening extending through the core. At the opposite end of the spool from wheel E is mounted a train of wheels, to which motion is imparted by the spindle through a pinion, g, secured to the spindle. The wheel 7c, gearing with said pinion, is mounted on the face of the magnets head, and carries a pinion which gears with a wheel, Z, sleeved on the spindle E. This train of wheel-worl constitutes a train for a clocl; in which the spindle E forms the minntc-siindlc, receiving an impulse every minute by the action of the magnet upon the wheel l). The minutehand secured to the spindle is indicated at M, Fig. 2, and the hour-hand upon the sleeve carrying Z is indicated at H, Fig. The gear-train is iuclosed by a ring, 0, secured to the spoolliead and by a covcr-plate,1 fastened to the ring or to the head. The plate 1 is made to extend beyond the body of the magnet, and it furnishes a means whereby the 8 5 magnet and the attached clock mechanism may readily be substituted for the clock mechanism of an ordinary clock without marring the dial, it being only necessary to remove the mechanism and to bore the plate I at points coro responding to those at which such mechanism was secured. The magnet and mechanism may be then secured in place by screws passing from the rear through the plate 1? into the frame in the clock-case, or to other parts to 5 which the removed mechanism was attached. The operating-pawl f is preferably arranged to turn the wheel on the retracted movement of the armature, instead of on its forward movement,under the influence of the magnet. 10o

The retractor for the armature is shown at 1-, and consists of a spring attached to one head of the magnet, and having its free end in the path of the stud t upon the armature. An adjustable stop for the armature in its forward movement under the influence of the magnet is indicated at B. This stop I prefer to make a spring-stop, so that its influence shall combine with that of the spring 1", to throw the armature back at the completion of its forward movement. This may be accomplished by mounting the stop in an elastic arm, T, secured to the magnet. Projecting from the end of the armature near the pivots is an arm, K, carrying a locking-stop, 7c, whose office is, by entering between the teeth of wheel D, to hold the latter against accidental forward movement when the armature is retracted. A locking-stop, o, secured to the armature at the other side of the pivot, may be employed in place of the pawl w,to prevent backward movement of the wheel as the armature is drawn up by the magnet to permit the pawl f to take afresh hold on the wheel.

I do not limit myself to any particular form of devices for communicating movement to the wheel from the vibrations of the armature, nor to any particular kind of retracting devices or form of wheel-work, the essence of my invention consisting in the general construction of the magnet and arrangement of the operated mechanism with relation thereto, whereby simplicity, compactness, and certainty of action are secured.

The form of the flanges I) may be varied without departing from the invention. I have shown them as curved; but they might be of other outline, the armature in case ofsuch variation being correspondingly varied in shape so as to be in close proximity thereto.

1 have described the various parts of the apparatus as all mounted on the magnet itself, as by this arrangement I secure the maximum of simplicity and compactness in construction but I do not wish to confine myself strictly to such arrangement, since partsas, for instance, the spindle, the armature, &c.might be mounted on any support, if properly arranged to give the same relative arrangement and mechanical relation of the devices.

Although the best results are obtained when the eleetro-magnet has an iron core, B, I do not confine myself thereto, as such magnetic core might be dispensed with, the space within the coils being then magnetic, as is well understood in the art, and the heads or flanges being still magnetic.

It is obviously not necessary to make all of the flange magnetic, and the portions of it that do not act on the armature might be dispensed with, or their place taken by other material not magnetic in its nature.

The form of electro-magnet and armature herein described is claimed in another application for patent filed by myself, and is only claimed herein in the combination with other devices.

Vhat I claim as my invention is 1. The combination, with an electro-magnet, of a wheel operated by said magnet and mounted on a shaft whose axis is on aline passing through the core of said magnet parallel with the magnetic axis.

2. The combination of the eleetro-magnet having flanged or rectangular polar extensions, a curved armature bridging the flanges and vibrating transversely to the axis of the magnet, and a ratchet or toothed wheel supported on the face of the magnet-head, and an operating-pawl for the same actuated by the armature.

3. The combination, with an electro-magnet having a perforated core, of a spindle passing through the core and mounted in the poles thereof, a wheel upon said spindle parallel with the face of one pole, and an armature vibrating transversely to the core, and carrying an operating-pawl that engages with the wheel.

4.. The combination, with the magnet consisting of a spool whose body and heads are of magnetic material and constitute the poles for the magnet, of an armature bridging the heads, a wheel suitably mounted on the magnet and parallel with one of the spool-heads, and an actuating-pawl operated by the armature.

' 5. The combination, with an electro-magnet, of a spindle passing through the core, a wheel mounted on the spindle at one end of the core, an actuating-armature operated by rectangular polar extensions from the core, and at the other end of the corea second wheel or pinion gearing with wheels mounted on the head of the electro-magnet.

6. An electric-clock mechanism consisting of the electro-magnet, the time-train, the main shaft in a line parallel or coinciding with the axis of the magnets core, an armature hung to vibrate in a plane parallel with the plane of rotation of the wheel upon said shaft, and devices for operating the train from the vibrations of the armature.

7. The combination, with the armature, of the adjustable stop mounted in a spring-arm and placed in position to receive the blow of the armature as the latter moves up underthe influence of the magnet.

8. The combination, with the spool-magnet, of the wheel -Work upon the spool-head, the operating curved armature, and the retracting-spring secured to the spool-head.

9. The combination, with the magnet and its attached clock mechanism, of the plate P, extended as described, to furnish a means whereby the magnet and its operated mechanism may be readily placed in a clock-case of any size.

10. The combination, with an electro-magnet, of a wheel operated by said magnet and carried on a shaft with its axis in a line substantially parallel with the axis of the magnet.

11. An iron spool suitably wound with an electric conductor, in combination with an armature shaped to conform to the spoolfianges, and a shaft fixed in a line parallel with the spools axis and carrying a driven wheel.

12. The eleotro-magnet having'a hollow center and provided at its ends with j ournal-bearings e for a shaft, E.

13. The combination, with an electro-ma-gnet, of electric-clock mechanism operated by said magnet and mounted thereon.

let. The combination, with a single-spool electro-niagnet, of a rotating shaft operated thereby and mounted in a bearing or bearings attached to said magnet. 

